KR101121308B1 - Switching method and switching apparatus for take-up roll of amorphous thin band - Google Patents

Abstract

The present invention is easy and inexpensive regardless of the amount of winding in winding up an amorphous alloy ribbon using a winding device having a plurality of winding rolls having a magnet on the surface, and furthermore, such as breaking of the ribbon, uneven winding, etc. In a method of winding up an amorphous thin plate having magnetic properties cast using a cooling roll by using two or more winding rolls, by providing a winding roll switching device and method for amorphous thin ribbons that realize stable switching of a winding roll without troubles. When the winding roll is switched, the amorphous thin plate is brought into contact with the next winding roll, and the wound amorphous sheet is wound while the next winding roll is brought close to the cooling roll, or the next winding roll and the cooling roll are spaced apart from the winding roll. A method for switching an amorphous thin plate, characterized in that the amorphous thin plate is cut between the roll and the next winding roll.

Magnetic, Winding Roll, Breaking, Amorphous Lamination, Cooling Roll

Description

Winding roll switching method and switching device of amorphous ribbon {SWITCHING METHOD AND SWITCHING APPARATUS FOR TAKE-UP ROLL OF AMORPHOUS THIN BAND}

The present invention relates to a method of winding an amorphous thin ribbon cast using a cooling roll online using a winding device comprising two or more winding rolls.

The quench solidification method for producing an amorphous thin ribbon includes a single roll method and a twin roll method, but the most common method is a single roll method. This single roll method is a method in which molten metal is blown onto the surface of a cooling roll rotating at a high speed, rapidly solidified on the cooling roll to continuously obtain an amorphous thin ribbon. When manufacturing on an industrial scale, it is usually necessary to wind up or collect | recover this quench-solidified amorphous ribbon. Until now, various methods and apparatuses have been proposed for the winding method of winding the amorphous ribbon online immediately after casting, but generally, a method and an apparatus for winding by rotating the winding roll using a winding roll have been adopted. For example, Japanese Patent Application Laid-Open No. 8-318352 discloses a range of winding roll surface speeds when capturing an amorphous ribbon tip by using a winding roll having a magnetic amorphous thin ribbon on its surface. The winding method made into less than 100% is proposed. However, the winding using only one winding roll has a limitation in the winding weight on a facility, and it is necessary to balance the winding conditions such as casting speed, winding speed, tension, etc. Winding is performed.

Moreover, as a winding device which uses several winding rolls, there exists a carousel-type winding device etc. which consist of two or more winding rolls magnetically on the surface.

In the case of winding the casting thin ribbon continuously with a plurality of winding rolls, it is necessary to switch the winding roll, but it was difficult to stably wind the amorphous thin ribbon by switching from another winding roll having a magnetic surface to another winding roll in an instant. Therefore, Japanese Unexamined Patent Application Publication No. 11-28552 discloses that the next winding roll which rotates at high speed in the thin ribbon pass line being wound from below is brought into contact with the thin ribbon to cut at a limited position between two winding rolls. The method of winding up to the next winding roll is proposed. This proposal sets the relationship between the cutting position, the distance L1 of the next winding roll, and the distance L2 of the next winding roll and the cooling roll to L1≥L2 / 20, and the difference between the thin ribbon speed and the winding roll speed. Switching is done within ± 2m / sec.

However, in the method disclosed in Japanese Unexamined Patent Application Publication No. 11-28552, the tip of the amorphous ribbon after cutting is caught by the next winding roll, but the winding still cannot be continued, such as the amorphous ribbon is broken immediately after switching. And the winding roll was not switched reliably.

INDUSTRIAL APPLICABILITY The present invention is simple and inexpensive when winding an amorphous ribbon by using a carousel winding device having a plurality of winding rolls with magnetic winding on the surface, and furthermore, the winding roll can be reliably switched without breaking the ribbon. A method and apparatus for winding roll switching of an amorphous ribbon is provided.

This invention was made | formed in order to solve the said subject, The summary is

1) In the method of winding up an amorphous thin plate having magnetic properties cast using a cooling roll by using two or more winding rolls, when the winding roll is switched, the amorphous thin plate is brought into contact with the next winding roll, and further The amorphous thin plate being wound is cut in a state in which the winding roll is close to the cooling roll, or the amorphous thin plate is cut between the winding roll and the next winding roll by spaced apart from the next winding roll and the cooling roll, and the amorphous foil is cut with the next winding roll. The method of switching the winding roll of an amorphous thin plate characterized by winding up.

2) In the method of winding up the amorphous thin ribbon which has the magnet cast using the cooling roll using two or more winding rolls, the amorphous thin ribbon cast at the time of switching a winding roll advances an amorphous thin ribbon to the next winding roll. After pressing and contacting with a some press roll in the direction, the said foil is cut out with the blade which cuts the said ribbons provided between the said press rolls, and it switches to the next winding roll, The winding roll of the amorphous foil of 1) characterized by the above-mentioned. Switching method.

3) In the method of winding up the amorphous thin ribbon cast using the cooling roll using two or more winding rolls, when switching a winding roll, the said amorphous thin ribbon is made to contact a next winding roll, and the next winding roll is made into Winding roll switching method of the amorphous ribbon of 1) characterized by cutting the amorphous ribbon currently wound in the state adjacent to the cooling roll, and winding up the amorphous ribbon by the next winding roll,

4) In the method of winding up the amorphous thin ribbon cast using the cooling roll using two or more winding rolls, when changing to the next winding roll, the tip part of the amorphous thin ribbon after switching is guided by the said guide apparatus by said guide apparatus. After pressing on a surface, it winds up and switches a winding roll, The switching method of the amorphous thin ribbon in any one of 1) -3) characterized by the above-mentioned.

5) A method of winding an amorphous thin ribbon cast using a cooling roll by using two or more winding rolls, wherein the amorphous thin ribbon is brought into contact with the next winding roll when the winding roll is switched to the winding roll and the next winding roll. At the position until cutting an amorphous ribbon from the contact position with the said amorphous ribbon of the circumferential direction of the next winding roll, until the thin ribbon was cut | disconnected and the cut | disconnected amorphous ribbon tip part was rolled up to the next winding roll, The amorphous ribbon according to 1), wherein the tip of the amorphous ribbon cut by the guide device provided in proximity to the next winding roll is pressed on the surface of the next winding roll, and then the amorphous ribbon is wound and the winding roll is switched. Switching method,

6) A winding device in which an amorphous thin ribbon having a magnet cast using a cooling roll is wound by two or more winding rolls having a magnet on the surface, wherein the amorphous thin ribbon cast when the winding roll is switched to the next winding roll. Amorphous gourd having a cutting mechanism for cutting the amorphous gourd after contacting, and cut in proximity to the next take-up roll at a position from the contact position with the amorphous gourd in the circumferential direction of the next take-up roll to wind up the amorphous gourd. A switching device for an amorphous ribbon, characterized in that a guide device is provided for pressing the tip of the roll onto the winding roll surface.

7) A winding device in which an amorphous thin ribbon having a magnet cast by using a cooling roll is wound by two or more winding rolls having a magnet on the surface, and when the winding roll is switched, the cast amorphous ribbon is pressed to press the next winding. A plurality of pressing rolls in contact with the rolls are provided in the advancing direction of the amorphous ribbon, and a blade for cutting the amorphous ribbon is provided between the plurality of pressing rolls, and the contact position with the amorphous ribbon in the circumferential direction of the next winding roll. Switching to the amorphous ribbon according to 6), wherein a guide device for pressing the tip of the amorphous ribbon cut in close proximity to the next winding roll to the winding roll surface is provided at the position from which the amorphous ribbon is wound up. Device.

BRIEF DESCRIPTION OF THE DRAWINGS The figure which shows the winding start state of the winding roll switching method of the amorphous thin ribbon which concerns on this invention.

1B is a view showing a wound state in a normal state.

1C is a view showing a state in which an amorphous thin ribbon is in contact with the take-up roll by rotating the take-up device for switching;

1D is a view showing a state in which the winding device moves and approaches the cooling roll.

1E is a diagram illustrating a state where an amorphous thin ribbon is cut.

It is a figure which shows the state which winds up an amorphous thin ribbon tip part.

1G is a diagram illustrating a state switched to the next winding roll.

It is a figure which shows the winding start state of the winding roll switching method of the amorphous thin ribbon which concerns on this invention.

2B is a view showing a state in which an amorphous thin ribbon is brought into contact with the take-up roll due to the rotation of the take-up device;

2C is a diagram illustrating a wound state in a normal state.

2D is a diagram illustrating a state where an amorphous thin ribbon is cut.

2E is a view showing a state in which an amorphous thin ribbon tip portion is wound up;

2F is a view showing a state switched to the next winding roll;

It is a schematic diagram (side view) which shows the winding roll switching device of the amorphous thin ribbon which concerns on this invention.

It is a schematic side view which shows the winding roll switching state which concerns on this invention.

It is a schematic diagram (side view) which shows the cutting | disconnection state of an amorphous thin ribbon at the time of winding-up roll switching which concerns on this invention.

It is a schematic diagram (side view) which shows the winding state immediately after the winding of an amorphous ribbon by the switched winding roll which concerns on this invention.

The schematic diagram (side view) which shows the winding state by the switched winding roll which concerns on this invention.

The schematic diagram (side view) which shows the winding state by the switched winding roll which concerns on this invention.

9 is a schematic view showing the guide position of the guide device according to the present invention.

10 is a schematic view showing the evacuation position of the guide device according to the present invention.

It is a schematic diagram which shows the other form example of the guide apparatus which concerns on this invention.

<Description of the code>

1: tundish

2: molten metal

3: nozzle

4: cooling roll

5: carousel winding device

6, 7: winding roll

8: cutting device

9: arm

10: cutting mechanism

11, 12: press roll

13: cutting blade

14: guide device

15: guide roll

16: guide plate

17: moving mechanism of the guide position

A, B, F, H: direction of facility movement

C: amorphous band

D, E: direction of movement of equipment

P, P ': Pass Line

S: gap between winding roll and cooling roll

T: Amorphous thin ribbon tip part after cutting

I: waiting position of cutting device

J: movable position of cutting device

K: Guide position of the guide device

L: Evacuation location of the guide device

G1: gap between guide roll and winding roll

G2: gap between guide plate and winding roll

M: Contact position of the winding roll 7 and the amorphous thin ribbon

R: Amorphous thin film wound part

The present invention will be described based on FIGS. 1A-1G and 2A-2F. 1: A is a figure which shows the outline of one Embodiment in the winding roll switching method of the amorphous thin ribbon which concerns on this invention at the time of employ | adopting the carousel system winding apparatus provided with two winding rolls. It is a figure which shows the outline of other embodiment of the winding roll switching method of the amorphous thin ribbon which concerns on this invention when the said carousel system winding apparatus is employ | adopted.

In FIG. 1A, the molten metal 2 in the tundish 1 is sprayed and rapidly solidified on the surface of the cooling roll 4 which is rotating at a high speed through the nozzle 3 to form an amorphous thin ribbon C. Winding is started by the carousel winding device 5 which approached 4). It is preferable that the gap between the cooling roll 4 and the winding roll 6 at the start of winding be as close as possible so as not to collide in order to reliably capture the tip of the amorphous ribbon, and the preferred range is 100 mm or less, more preferably. Is 10 mm or less. This carousel winding device 5 has a structure of alternately winding by winding rolls 6 and 7 respectively provided at opposite positions, and after winding a certain amount by one winding roll 6. The winding operation is performed by switching the windings to the other winding rolls 7 to face each other. These winding rolls 6 and 7 embed a permanent magnet on each roll surface (the magnetic force on the winding roll surface is preferably 1000 G or more), and by capturing the tip of the amorphous thin ribbon C by the force of the magnet, After having a function to wind up by rotation of a winding roll. Above this winding device 5, the cutting device 8 connected with the drive mechanism (not shown) provided separately is arrange | positioned.

In FIG. 1A, the winding device 5 captures the tip end portion of the amorphous thin ribbon C by the winding roll 6, and then contacts and winds up with the cooling roll 4 due to the winding thickness of the winding roll 6. In order to avoid the interference of the winding roll 6 and the cooling roll 4 at the time of rotation of the apparatus 5, it moves in the direction of arrow A, and then rotates in the direction of arrow B to continue winding normally in the state of FIG. 1B. do. At this time, the take-up roll 6 is in contact with the next take-up roll 7 facing the surface of the cooling roll 4 and the surface of the amorphous foil C in the pass line P made by the take-up roll 6. The amorphous foil C is wound up in the state just waiting. Here, the next winding roll 7 is rotating in the moving direction of the pass line P at the surface speed which is almost the same as the moving speed of the pass line P (amorphous thin ribbon C). The winding roll is switched at the point where the winding of the winding roll 6 reaches a predetermined amount. During the switching, the winding roll 6 is wound in the direction of the arrow D in order to contact the amorphous ribbon C with the next winding roll 7. The device 5 is rotated to stop at the position in FIG. 1C. At this time, the amorphous foil C should just contact the winding roll 7 at the stop position of the next winding roll 7, However, at least 50 mm or more needs to be made in contact with the magnetic force of the winding roll. Thereafter, the winding device 5 is moved in the direction of the arrow E, and stopped at a position close to the cooling roll 4 as shown in FIG. 1D. At this time, the gap S between the next winding roll 7 of the winding device 5 and the cooling roll 4 should be as close as possible so as not to collide, and may be 1 mm or more and 200 mm or less, but preferably 1 It is at least 100 mm. At the position where the winding roll 7 is close to the cooling roll 4, as shown in FIG. 1E, the cutting device 8 installed above the winding apparatus 5 moves in the direction of an arrow F, and the winding roll Between the 6 and the winding roll 7, the amorphous thin ribbon C is cut | disconnected. The amorphous thin ribbon tip portion T captured at this time is expanded by air resistance as shown in FIG. 1F, but the amorphous ribbon thin tip portion T is wound because the winding roll 7 and the cooling roll 4 are close to each other. When passing through the gap S between the roll 7 and the cooling roll 4, it is folded back and wound in a state of being in close contact with the take-up roll 7, without breaking the amorphous thin ribbon as shown in FIG. 1G. It is switched. In addition, the cutting device 8 moves in the direction of H immediately after cutting so as not to interfere with the equipment, and causes the air above the winding device 5 to stand by.

The present inventors have been exploring the cause of the failure of the switching due to the breakage of the amorphous ribbon even though the amorphous band cutting and tip capturing were stably realized. However, as a result of analyzing the state at the time of switching by installing a high-speed video, In the case where the shape of the portion T is greatly expanded, it has been found that the amorphous ribbon breaks when wound. In addition, experiments have found that when the amorphous thin ribbon tip end portion T is pressed against the winding roll 7, breakage can be avoided. Therefore, when the winding roll 7 and the cooling roll 4 were made to adjoin, when the amorphous foil tip tip T was made to pass through the clearance gap S, the method of pressing the foil tip tip part stably on the winding roll was discovered. This method presses the amorphous thin tip end portion T to the take-up roll 7 by utilizing the existing cooling roll 4, so that it is not necessary to introduce an auxiliary equipment for pressing, and thus it becomes possible to switch at low cost.

The winding roll 6 which wound the amorphous thin ribbon is taken out by the winding roll exchange apparatus (not shown), and attaches a new winding roll. The winding roll 6 which wound the amorphous thin ribbon is conveyed by a conveying apparatus (not shown), and is conveyed to the next process. After mounting a new winding roll, the position of this winding roll 7 rotates and winds up normally at the position of the winding roll 6 of FIG. 1B. These series of steps are repeated to take a predetermined number of turns.

In another embodiment of the present invention of FIGS. 2A to 2F, in FIG. 2A, the winding device 5 moves in the direction of arrow A after capturing the tip of the amorphous ribbon C with the winding roll 6, and then Rotate in the direction of arrow B, but stop at the position where the amorphous ribbon C is in contact with the next winding roll 7 as shown in FIG. 2B, and then move in the direction of arrow E, as shown in FIG. 2C. Likewise, it stops at the position close to the cooling roll 4. Winding continues normally in the state of FIG. 2C. The winding roll is switched at the point where the winding of the winding roll 6 becomes a predetermined amount. As shown in FIG. 2D, the winding roll is installed by the cutting device 9 provided above the winding device 5. The amorphous thin ribbon C is cut between the 6 and the winding roll 7. As shown in FIG. 2E, the amorphous ribbon tip portion T is folded back when passing through the gap S between the winding roll 7 and the cooling roll 4, and wound in a state of being in close contact with the winding roll 7. Then, as shown in FIG. 2F, the amorphous thin ribbon is switched without breaking.

The winding roll 6 which wound the amorphous thin ribbon is taken out by the winding roll exchange apparatus (not shown), and attaches a new winding roll. The winding roll 6 which wound the amorphous thin ribbon is conveyed by a conveying apparatus (not shown), and is sent to the next process. After attaching a new winding roll, the winding device 5 moves and rotates and continues winding normally in the state of FIG. 2C via FIG. 2B. These series of steps are repeated to take a predetermined number of turns.

Although the present invention has been described using Figs. 1A to 1G and Figs. 2A to 2F, it is conceivable to use the normal winding position as Fig. 2B, or to perform the position of the winding roll replacement after the winding after the movement of arrow A in Fig. 1A. Although it is possible to contact the amorphous roll to the take-up roll 7 to bring the take-up roll 7 and the cooling roll 4 close to each other, any method of cutting the amorphous gourd 8 is regarded as the present invention. In addition, when an amorphous thin ribbon is cut | disconnected between the next winding roll and a cooling roll, the winding roll and the next winding roll, and wound up an amorphous thin ribbon with the next winding roll, it performs by the following method.

It is a schematic diagram which shows schematic structural example of the winding roll switching device of the amorphous thin ribbon which concerns on this invention at the time of employ | adopting the carousel system provided with two winding rolls. Fig. 4 is a schematic diagram showing a state in which the amorphous thin ribbon being wound is brought into contact with the next winding roll by pressing rolls (FIG. 3 to FIG. 8 show an example in which two pressing rolls are arranged in the advancing direction of the amorphous thin ribbon). Fig. 5 is a schematic diagram showing a state in which the amorphous ribbon is cut with a cutting blade, and Fig. 6 shows that after the amorphous ribbon has been cut, the next winding roll captures the amorphous ribbon tip and winds up the amorphous ribbon tip by a guide device. It is a schematic diagram which shows the winding start state by winding up a thin-tip tip part after pressing in, and FIG. 7 is a schematic diagram which shows the state which the pressure roll and the guide apparatus evacuated, and FIG. 8 shows the state which started winding with the next winding roll. It is a schematic diagram to show. 3-8, the process of winding roll switching is demonstrated.

In FIG. 3, the molten metal 2 in the tundish 1 is sprayed and rapidly solidified on the surface of the cooling roll 4 which is rotating at a high speed through the nozzle 3 to form an amorphous thin ribbon C. It winds up with the carousel winding device 5 provided near. This carousel winding device 5 has a structure of alternately winding by winding rolls 6 and 7 respectively provided at opposite positions, and after winding a certain amount by one winding roll 6. The winding operation is performed by switching the windings to the other winding rolls 7 that face each other. These winding rolls 6 and 7 have a function which embeds a permanent magnet in each roll surface, captures the tip end of the thin ribbon C by the force of this magnet, and winds up by rotation of a winding roll after that. .

As shown in FIG. 4, the next take-up roll 7 is brought close to the take-up roll 7 between the position R from the contact position M with the amorphous thin ribbon in the circumferential direction until the amorphous thin ribbon is wound. The guide apparatus 14 is provided. This guiding device 14 is an axial direction of the winding rolls 6 and 7 so as not to interfere with the equipment as shown in FIG. 10 when the winding start or the carousel winding device 5 is rotated after the winding roll switching. Evacuate to the evacuation position L of and move the moving mechanism 17 so as to move to the guide position K close to the take-up roll 7, as shown in FIG. Have Although the example of the movement of the winding roll axial direction was shown in this example, a moving mechanism is not limited unless it interferes with facilities, such as moving perpendicularly with respect to the winding roll surface. The guide device 14 is configured to press the amorphous ribbon tip portion T shown in FIG. 5 to the surface of the take-up roll 7 after the guide roll 15 and the guide roll 15 pass through the amorphous ribbon tip portion T. The guide plate 16 for introducing into the winding-up part R of the next winding roll 7 is comprised (refer FIG. 3). The guide roll 15 and the guide plate 16 are more preferably nonmagnetic materials such as aluminum so as not to be affected by the permanent magnet embedded in the winding roll surface, but a magnetic material may be used. The gap G1 of the guide roll 15 and the winding roll 7 and the gap G2 of the guide plate 16 are 1 mm or more and 200 mm or less, Preferably they are 1 mm or more and 100 mm or less. The reason why the gap G1 is in the above range is that, when the gap G1 becomes 200 mm or more, the effect of pressing the amorphous foil tip end portion L to the winding roll 7 becomes less, and at 1 mm or less, the amorphous foil It is based on the experimental finding that the tip part T becomes difficult to pass through the guide roll 15 and the guide plate 16. In addition, the width | variety of the guide roll 15 and the guide plate 16 should just have the width more than an amorphous thin ribbon width, and roll diameter and board thickness are not specifically limited, but it is necessary to prevent the lack of strength and interference with a facility. There is. In the present example, the guide roll 15 and the guide plate 16 were used as the guide device 14 for pressing the amorphous ribbon tip portion T to the surface of the take-up roll 7, but the amorphous ribbon tip portion T was used. Shape, for example, a guide roll, a semicircle pillar, a triangular pillar, a square pillar, a guide plate or the like as shown in FIG. 11 may be provided alone (the inlet side of the amorphous ribbon). It is preferable to provide a plurality of structures having a wider gap and a narrower structure). However, an appropriate gap is set in advance by experiment or the like.

Above the winding device 5 of FIG. 3, the cutting device 8 connected with the drive mechanism (not shown) provided separately is arrange | positioned. This cutting device 8 is located in the middle of the two pressing rolls 11 and 12 arranged in the advancing direction of the amorphous ribbon at the distal end of the arm 9, and is also in the thin ribbon path. The cutting mechanism 10 incorporating the cutting blade 13 is connected to the line P in the direction from above. The two pressing rolls 11 and 12 have a rotation axis parallel to the rotation axes of the take-up rolls 6 and 7, and have the same width as the take-up rolls 6 and 7. The width of the pressing rolls 11 and 12 may have a width equal to or larger than the width of the ribbon in order to stably press the amorphous ribbon C, and the diameter of the pressing roll may be equal to or less than the stroke of the cutting blade 13. Moreover, the said cutting device 8 is comprised so that it may rotate in circular arc shape so that the winding roll 6 may be approached at the time of cutting the thin ribbon C. As shown in FIG. In this example, the cutting device 8 is rotated in the shape of an arc. However, the cutting device 8 may be driven in the vertical direction to approach the winding roll 6.

In the winding process of FIG. 3, in the normal state, the winding roll 6 is in the pass line P by which the next winding roll 7 which opposes is made by the surface of the cooling roll 4, and the winding roll 6. The amorphous foil C is wound in a state of waiting just before contacting the surface of the amorphous foil C. Here, the winding roll 7 is rotating in the movement direction of the pass line P at the surface speed substantially the same as the movement speed of the pass line P (amorphous thin ribbon C). The guide apparatus 14 is waiting for the next winding roll 7 to be close to the winding roll 7 in the position from the contact position with the amorphous ribbon in the circumferential direction until the amorphous ribbon is wound up. In the normal state, this guide device 14 moves from the evacuation position L shown in FIG. 10 to the guide position K shown in FIG.

Next, as shown in FIG. 4, when the winding roll 6 winds up a certain amount of amorphous thin ribbon C, the cutting device (from the upper side between the winding roll 6 and the next winding roll 7) ( 8) is rotated in the circular arc shape from the position of I to the position of J, presses the amorphous thin ribbons C by the two pressing rolls 11 and 12 incorporated in the cutting mechanism 10, and the next winding roll ( The amorphous thin ribbon C is brought into contact with 7) at most 1/2 of the peripheral length of the winding roll, preferably at least 50 mm or more. At this time, by arranging a plurality of pressing rolls (two of the pressing rolls 11 and 12 in this example), irrespective of the winding amount of the winding roll 6 and regardless of the size of the cooling roll 4 (normal use) In the grinding process, the diameter of the cooling roll 4 is reduced because grinding and polishing are performed, and the pass line P 'of the amorphous thin ribbon cut made by the pressing rolls 11 and 12 is always in a constant positional relationship. .

Moreover, as shown in FIG. 5, the cutting blade raise / lower mechanism (not shown) which separately installed the cutting blade 13 provided between the pressing rolls 11 and 12 which contacted the amorphous thin ribbon C was operated. The cutting blade is lowered and brought into contact with the amorphous ribbon C to cut it, but since the pass line P 'of the amorphous ribbon is always in a constant positional relationship, the relationship between the amorphous ribbon and the cutting blade 13 is also constant and is amorphous. Cutting of the ribbon is stable.

The amorphous thin ribbon C cut | disconnects the front-end | tip part by magnetic force on the next winding roll 7 surface as shown in FIG. The reason why the amorphous thin ribbon C is brought into contact with 1/2 or less of the circumferential length of the winding roll is that in order to contact more than 1/2 of the circumferential length of the cooling roll, not only the lowering of the arm 9 but also the expansion mechanism are required. This is because the equipment is complicated and the equipment becomes expensive. In addition, the reason why the contact length is 50 mm or more as the preferred length is experimentally that in the case of a magnetically wound winding roll (the magnetic force at the surface is 1000 G or more), the tip of the 100% amorphous ribbon can be captured by contacting the amorphous ribbon by 50 mm or more. Because I found it.

At this time, the tip portion T of the amorphous thin ribbon captured is folded back by air resistance as shown in FIG. 5. As shown in FIG. 6, the tip portion T is urged to the take-up roll 7 by the guide roll 15 by the guide device 14, and further to the take-up roll 7 by the guide plate 16. Induce the compressed amorphous foil to the wound portion (R) to wrap the tip of the amorphous foil.

Although the present inventors have stably realized amorphous band cutting and tip capturing, the inventors have been investigating the cause of the failure of switching due to the breakage of the amorphous ribbon when the casting speed, the plate thickness, and the like are changed. As a result of analyzing the state of poetry, it discovered that it originates in the shape of refolding of this amorphous thin ribbon tip part T. As shown in FIG. That is, when the shape of this retracted tip portion T is greatly expanded, it was found that breakage of the amorphous ribbon occurs in the winding portion R of the amorphous ribbon. Therefore, by pressing this tip part to the winding roll 7 by the guide roll 15, the refolding part of the amorphous thin ribbon tip part T is prevented from expanding, and also the winding plate 7 is carried out by the guide plate 16. By inducing the amorphous thin ribbon pressed against the wound portion R, it was found to be switched without causing the thin ribbon breaking under any conditions.

After the amorphous thin ribbon tip is wound around the next winding roll 7, the cutting device 8 is evacuated and returned to its original position as shown in FIG. 7, and the guide device 14 is also shown in FIG. 10. Evacuate to the evacuation site (L) so as not to interfere with the installation. As shown in FIG. 8, when winding is started with the winding roll 7, the winding roll 6 which wound the amorphous ribbon was taken out by the winding roll exchange apparatus (not shown), and a new winding roll is attached. The winding roll 6 which wound the amorphous thin ribbon is conveyed by a conveying apparatus (not shown), and is conveyed to the next process. After mounting a new winding roll, the position of this winding roll 7 is comprised so that it may wind up normally at the position of the winding roll 6, and it repeats these series of processes, and continues winding up.

First embodiment

As an example of the present invention, an amorphous thin ribbon composed of Fe: 80.5%, B: 15.0%, Si: 3.0%, C: 1.0%, and the remainder of the unavoidable impurities is cast in an atomic%, and cast by the apparatus shown in FIG. The winding roll was switched by changing the speed and the plate thickness. The opening shape of the nozzle used for casting was 170 mm x 0.85 mm, it was made to eject to the surface of the cooling roll of the internal water cooling system which consists of copper alloys, and it was set as amorphous foil. In addition, the cooling roll was made into diameter (phi) 1198 mm, width 250 mm, and thickness 19mm.

In addition, the winding roll made the diameter Φ600mm, width 375mm, and the magnetic force on the surface 2000g. The position of the winding roll at the time of switching was set so that the position of the next winding roll 7 might become the same position as the winding roll 6 at the time of winding start from a viewpoint of the simplification of equipment and control. In this case, the contact length of the amorphous thin ribbon and the winding roll was 30 cm.

As a comparative example, by the method shown in patent document 2, L1 = 30cm and L2 = 5m, the others were produced on the casting conditions similar to the example of this invention, and the winding and the switching of the winding roll were tried. In this invention example and a comparative example, the winding-up thickness to the winding roll was about 200 mm, and the casting speed and plate | board thickness were changed and it switched. The results are shown in Table 1.

[Legend] ○: Good cutting of the amorphous ribbon and capturing the tip, can be switched without breaking the amorphous ribbon

       ×: Cutting amorphous ribbon and capping tip end, but amorphous ribbon breaks during winding and cannot be switched

In Nos. 1 to 10 of the example of the present invention, even if the casting speed and sheet thickness were varied, the winding roll could be switched without any problem. In Nos. 11 to 20 of the comparative example, when the casting speed was slow, switching was possible regardless of the plate thickness. However, if the casting speed is high and the plate thickness is thick, the cutting and tip replenishment of the amorphous ribbon are good, but breakage occurs at the time of drying the amorphous ribbon, and thus the winding roll cannot be switched.

Second embodiment

As an embodiment of the present invention, an amorphous thin ribbon composed of Fe: 80.5%, B: 15.0%, Si: 3.0%, C: 1.0%, and the remainder of the unavoidable impurities is cast in an apparatus shown in FIG. The winding roll was switched by changing the speed and the plate thickness. The opening shape of the nozzle used for casting was 170 mm x 0.85 mm, it was made to spray on the surface of the internal water cooling system cooling roll which consists of copper alloys, and it was set as amorphous foil. In addition, the cooling roll was made into diameter (phi) 1198 mm, width 250 mm, and thickness 19mm. Moreover, the winding force of the winding roll was 350 G or more in diameter Φ600 mm, width 375 mm, and 5 mm from the surface, and made the contact length 30 cm. As shown in Fig. 9, the guide device had a structure in which the guide roll and the guide plate were combined, and the guide roll was made of aluminum, and the gap between the width 200 mm, the roll diameter Φ 60 mm, and the winding roll was 15 mm. The guide plate was made of aluminum of 200 mm and length of 300 mm, and the gap between the guide plate at the outlet of the guide plate and the winding roll was 5 mm.

As a comparative example, by the method described in Patent Literature 2, L1 = 30 cm and L2 = 5 m, and others were prepared under the same casting conditions as the examples of the present invention, and the winding and winding rolls were tried.

In this invention example and the comparative example, the winding-up thickness to the winding roll was about 200 mm, and the casting speed and the plate | board thickness were changed and it switched. The results are shown in Table 2.

[Legend] ○: Good cutting of the amorphous ribbon and capturing the tip, can be switched without breaking the amorphous ribbon

       ×: Cutting amorphous ribbon and capping tip end, but amorphous ribbon breaks during winding and cannot be switched

In Nos. 1 to 10 of the example of the present invention, even if the casting speed and sheet thickness were varied, the winding roll could be switched without any problem. In Nos. 11 to 20 of the comparative example, when the casting speed was slow, switching was possible regardless of the plate thickness. However, if the casting speed is high and the plate thickness is thick, cutting and capturing the tip of the amorphous ribbon are good, but breakage occurs when the amorphous ribbon is wound, and the winding roll cannot be switched.

In the winding apparatus which consists of two or more winding rolls which magnetically surfaced, this invention WHEREIN: When the said winding roll is switched, the said amorphous foil was made to contact the next winding roll, and the next winding roll was brought into proximity to a cooling roll. By cutting the amorphous thin ribbon wound up at, it is possible to prevent the break of the amorphous thin ribbon which has occurred immediately after the switching, thereby making it possible to reliably switch. Moreover, this invention WHEREIN: The winding device which consists of two or more winding rolls magnetically on the surface WHEREIN: The circumferential direction of the next winding roll, while winding up the amorphous foil tip part cut | disconnected at the time of switching a winding roll to the next winding roll. Amorphous that occurred immediately after switching by pressing the tip of the cut amorphous ribbon to the next winding roll surface by a guide device at the position from the contact position with the amorphous ribbon to the winding of the amorphous ribbon. It is possible to provide a winding roll switching method and an switching device for an amorphous ribbon that can prevent troubles such as breaking of the ribbon and reliably switch.

Claims (7)

delete delete delete delete In the method of winding up the amorphous thin ribbon which had the casting cast using the cooling roll using two or more winding rolls, when switching a winding roll, the said amorphous thin ribbon is made to contact a next winding roll, Cut the amorphous ribbon between the winding rolls of and roll the amorphous ribbon from the contact position with the amorphous ribbon in the circumferential direction of the next winding roll until the cut amorphous ribbon tip is wound on the next winding roll. In the position of, after pressing the tip of the amorphous ribbon cut by the guide device provided in close proximity to the next winding roll to the next winding roll surface, the amorphous ribbon is wound and the winding roll is switched. The winding roll switching method of an amorphous ribbon. It is a winding device which winds up the amorphous thin ribbon which had the casting cast using the cooling roll by the two or more winding rolls which had the magnetism on the surface, and when the winding roll is switched, the cast amorphous thin ribbon contacts a next winding roll. The amorphous ribbon cut in close proximity to the next winding roll which has a cutting mechanism which cuts an amorphous ribbon after making it, and it is a position from the contact position with the amorphous ribbon in the circumferential direction of the next winding roll to wind up an amorphous ribbon. A winding apparatus for winding an amorphous ribbon, wherein a guide device for pressing the distal end portion of the tip is provided on the winding roll surface. 7. The winding apparatus according to claim 6, wherein the amorphous thin ribbon cast by using a cooling roll is wound with two or more winding rolls having magnetic properties on the surface, and the cast amorphous ribbon is pressed while switching the winding roll. Has a plurality of pressing rolls in contact with the winding rolls of the amorphous thin ribbon in the advancing direction, and further includes a blade for cutting the amorphous thin ribbon between the plurality of pressing rolls, and the contact position of the amorphous thin ribbon in the circumferential direction of the next winding roll. From the roll of the amorphous ribbon, the guide roll for pressing the tip of the amorphous ribbon cut in close proximity to the next winding roll to the winding roll surface is provided at a position from which the amorphous ribbon is wound up. .

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